Three applet parameters can customize the behavior of the Graphic Editor. Applet parameters are specified with <PARAM> tags within the <APPLET> tag in the Graphic Editor’s HTML page. The parameters recognized by the Graphic Editor applet are:
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LOAD: This parameter tells the Graphic Editor to auto-load a specific graphics file when it starts. If the file does not exist, a message appears. If this parameter is not provided in the <APPLET> tag, then a file is not auto-loaded at startup and you have to select an initial graphics file from the list provided by the Graphic Editor.
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MODE: This parameter tells the Graphic Editor whether to startup in its normal "Edit Mode" or in a special "View Mode." When started in view mode, the Graphic Editor shows only its display window. When this parameter is used with the LOAD parameter, a Web site can be designed using HTML pages that are dedicated to specific graphic displays. No explicit selection of graphic files is required by a user, providing more typical HMI screen behavior. The possible values for this parameter are:
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EDIT (default value): The Graphic Editor starts up in its normal Edit Mode.
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VIEW_RO: The Graphic Editor starts up in read-only view mode. The Web browser user will not be allowed to send data values to the PLC.
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VIEW_RW: The Graphic Editor starts up in read/write view mode. The Web browser user will be allowed to send data values to the PLC after entering the write-access password.
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AUTO_LOGIN: This parameter tells the Graphic Editor to automatically enter the password that is required to permit writing to the PLC. If the MODE parameter is set to VIEW_RW or EDIT, then setting this parameter to TRUE will cause the Graphic Editor to allow writing to the PLC without requiring the user to enter the password. The possible values for this parameter are FALSE (default) and TRUE.
The following is an example of an applet tag for the Graphic Editor that causes it to start up in view mode while automatically loading a graphics file named UNIT_1. In this case, the Web browser allows you to send values to the PLC via any graphic objects that support sending values (assuming you have entered the write-access password).
<APPLET codebase="/classes"
archive="SAComm.jar,GDE.jar,Widgets.jar"
code="com.schneiderautomation.gde.GdeApplet"
width="700" height="514">
<PARAM name="LOAD" value="UNIT_1">
<PARAM name="MODE" value="VIEW_RW">
<PARAM name="AUTO_LOGIN" value="FALSE">
</APPLET>